﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WindowsFormsApp1
{
    internal class Class1
    {
        // 定义全局静态连接字符串
        public static string connectionString = "Server=DESKTOP-GU19NI6;Database=BookOrderSystem;Trusted_Connection=True;";
    }
}
